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#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
#
import threading, traceback, signal, sys, time
def stackdump(sig, frm):
code = []
for threadId, stack in sys._current_frames().items():
code.append("\n# ThreadID: %s" % threadId)
for filename, lineno, name, line in traceback.extract_stack(stack):
code.append('File: "%s", line %d, in %s' % (filename, lineno, name))
if line:
code.append(" %s" % (line.strip()))
print "\n".join(code)
signal.signal(signal.SIGQUIT, stackdump)
class LoudLock:
def __init__(self):
self.lock = threading.RLock()
def acquire(self, blocking=1):
while not self.lock.acquire(blocking=0):
time.sleep(1)
print >> sys.out, "TRYING"
traceback.print_stack(None, None, out)
print >> sys.out, "TRYING"
print >> sys.out, "ACQUIRED"
traceback.print_stack(None, None, out)
print >> sys.out, "ACQUIRED"
return True
def _is_owned(self):
return self.lock._is_owned()
def release(self):
self.lock.release()
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